diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index 7d9f2b7..62de70f 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -82,6 +82,10 @@
 # only to revision <= r1p1 of the Cortex A57 cpu.
 ERRATA_A57_828024	?=0
 
+# Flag to apply erratum 829520 workaround during reset. This erratum applies
+# only to revision <= r1p2 of the Cortex A57 cpu.
+ERRATA_A57_829520	?=0
+
 # Process ERRATA_A53_826319 flag
 $(eval $(call assert_boolean,ERRATA_A53_826319))
 $(eval $(call add_define,ERRATA_A53_826319))
@@ -105,3 +109,7 @@
 # Process ERRATA_A57_828024 flag
 $(eval $(call assert_boolean,ERRATA_A57_828024))
 $(eval $(call add_define,ERRATA_A57_828024))
+
+# Process ERRATA_A57_829520 flag
+$(eval $(call assert_boolean,ERRATA_A57_829520))
+$(eval $(call add_define,ERRATA_A57_829520))